A color ink-jet head is provided which includes: a plurality of head units each having 1/n of a total number of nozzles predetermined as a maximum number to jet ink of one color in one scanning, where n is an integer equal to or greater than 2, and wherein the nozzles of each of the head units are arranged at a same pitch; and a plurality of head blocks each having at least as many head units as a number of different ink colors to be used for the ink-jet head. The head units are provided for holding respective inks of the different ink colors and are arranged in a direction perpendicular to a printing direction of the ink-jet head. A predetermined number of head blocks are arranged in the printing direction in such a manner that no head units of a same color are aligned in the printing direction, and the head blocks execute printing for the predetermined number of head blocks multiplied by 1/n of a printing width in one scanning.